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How many grams of H2 are made from...?
How many grams of H2 are made from 327 grams of Zn and 365 grams of HCl.
We were given the equation Zn + 2HCL ---> ZnCl2 + H2
1 Answer
- 1 decade agoFavorite Answer
Most of what you need to solve this problem is given to you. :) You have your starting mass of both Zn and HCl, and you get your mole-to-mole ratios from the equation. You'll need to do your calculations twice, once with the 327g of Zn, and once with the 365g of HCl.
For Zn: Start with your mass of Zn (327g).
Convert that mass to moles of Zn by multiplying by (1 mole of Zn/whatever the molar mass of Zn is).
Now you want to convert moles of Zn to moles of H2. The problem tells you how many moles of Zn you have per mole of H2.
Finally, convert the moles of H2 to grams of H2. Be sure that you use the molar mass of H2 and not the molar mass of H.
For the HCl, you repeat the same process. Good luck! :)